Today.

• Ya'aleh V'YavoAmidah — in Retzei · and in Birkas HaMazonיַעֲלֶה וְיָבֹא

  Sukkot V (CH''M) · If you finished the bracha and remembered before finishing the Amidah, go back to Retzei.

• Neither — omit bothAmidah — second bracha—

  Summer — from Musaf of the first day of Pesach until Shmini Atzeres · Nusach Ashkenaz says nothing in the summer. Sefard, Ari and Edot HaMizrach say Morid HaTal.

• V'sen BrachaAmidah — Barech Aleinu (Ashkenaz) / Barcheinu (Sefard & Edot)וְתֵן בְּרָכָה

  Outside the rainy season

• L'David Hashem OriAfter Shacharis and after Mincha or Maarivלְדָוִד ה׳ אוֹרִי

  Elul through Shemini Atzeres · Ashkenaz: from Rosh Chodesh Elul through Shemini Atzeres.

Tachanun: omitted — Chol HaMoed · from Erev Yom Kippur to the end of Tishrei. Full Hallel.

• 30 SeptSukkot V (CH’’M)
• 1 OctSukkot VI (CH’’M)
• 2 OctSukkot VII (Hoshana Raba)
• 3 OctShmini Atzeret
• 4 OctSimchat Torah